<template>
  <div>
    <!-- 选择日期 -->
    <div id="ChooseData">
      <span class="demonstration">时间范围&emsp;</span>
      <el-date-picker
        v-model="value2"
        type="datetimerange"
        :picker-options="pickerOptions"
        range-separator="至"
        start-placeholder="开始日期"
        end-placeholder="结束日期"
        align="right"
      >
      </el-date-picker>

      <el-button type="primary">查询</el-button>
    </div>
    <!-- 选择日期 -->

    <div id="Procharts"></div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      value1: [new Date(2000, 10, 10, 10, 10), new Date(2000, 10, 11, 10, 10)],
      value2: "",
      pickerOptions: {
        shortcuts: [
          {
            text: "最近一周",
            onClick(picker) {
              const end = new Date();
              const start = new Date();
              start.setTime(start.getTime() - 3600 * 1000 * 24 * 7);
              picker.$emit("pick", [start, end]);
            },
          },
          {
            text: "最近一个月",
            onClick(picker) {
              const end = new Date();
              const start = new Date();
              start.setTime(start.getTime() - 3600 * 1000 * 24 * 30);
              picker.$emit("pick", [start, end]);
            },
          },
          {
            text: "最近三个月",
            onClick(picker) {
              const end = new Date();
              const start = new Date();
              start.setTime(start.getTime() - 3600 * 1000 * 24 * 90);
              picker.$emit("pick", [start, end]);
            },
          },
        ],
      },
      option: {
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            crossStyle: {
              color: "#999",
            },
          },
        },
        toolbox: {
          feature: {
            dataView: { show: true, readOnly: false },
            magicType: { show: true, type: ["line", "bar"] },
            restore: { show: true },
            saveAsImage: { show: true },
          },
        },
        legend: {
          data: ["Evaporation", "Precipitation", "Temperature"],
        },
        xAxis: [
          {
            type: "category",
            data: ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"],
            axisPointer: {
              type: "shadow",
            },
          },
        ],
        yAxis: [
          {
            type: "value",
            name: "Precipitation",
            min: 0,
            max: 250,
            interval: 50,
            axisLabel: {
              formatter: "{value} ml",
            },
          },
          {
            type: "value",
            name: "Temperature",
            min: 0,
            max: 25,
            interval: 5,
            axisLabel: {
              formatter: "{value} °C",
            },
          },
        ],
        series: [
          {
            name: "Evaporation",
            type: "bar",
            data: [
              2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4,
              3.3,
            ],
          },
          {
            name: "Precipitation",
            type: "bar",
            data: [
              2.6, 5.9, 9.0, 26.4, 28.7, 70.7, 175.6, 182.2, 48.7, 18.8, 6.0,
              2.3,
            ],
          },
          {
            name: "Temperature",
            type: "line",
            yAxisIndex: 1,
            data: [
              2.0, 2.2, 3.3, 4.5, 6.3, 10.2, 20.3, 23.4, 23.0, 16.5, 12.0, 6.2,
            ],
          },
        ],
      },
    };
  },

  methods: {
    drawpLine() {
      let myChart = this.$echarts.init(document.getElementById("Procharts"));
      // 绘制图表
      myChart.setOption(this.option);
    },
  },
  mounted() {
    this.drawpLine();
  },
};
</script>

<style lang="less" scoped>
#Procharts {
  width: 60%;
  height: 500px;
  margin-top: 20px;
  background-color: white;
}
</style>